Berol provide long lasting pens that are designed with a fibre tip to ensure that they won't run dry. Berol ensure that the Colourbroad will last up to 14 days without its lid, meaning that you can be sure you will never accidentally ruin your pen. The ink used in the pen is water based, which means that it is no problem to remove from fabric or furniture. This means that you can trust children with these pens and not have to worry about indelible consequences.